CVE-2026-23395 in Linux Kernel

要約 (英語)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ Currently the code attempts to accept requests regardless of the command identifier which may cause multiple requests to be marked as pending (FLAG_DEFER_SETUP) which can cause more than L2CAP_ECRED_MAX_CID(5) to be allocated in l2cap_ecred_rsp_defer causing an overflow. The spec is quite clear that the same identifier shall not be used on subsequent requests: 'Within each signaling channel a different Identifier shall be used for each successive request or indication.' https://www.bluetooth.com/wp-content/uploads/Files/Specification/HTML/Core-62/out/en/host/logical-link-control-and-adaptation-protocol-specification.html#UUID-32a25a06-4aa4-c6c7-77c5-dcfe3682355d So this attempts to check if there are any channels pending with the same identifier and rejects if any are found.

責任者

Linux

予約する

2026年01月13日

公開

2026年03月25日

エントリ

VulDB provides additional information and datapoints for this CVE:

識別子	脆弱性	CWE	悪用可	対策	CVE
353109	Linux Kernel Bluetooth サービス拒否	770	未定義	公式な修正	CVE-2026-23395